Remove AP5GC Preview tag in Azure hub for GA release

Author: b-branco

articles/index.yml

@@ -1364,7 +1364,7 @@ productDirectory:
         - networking
       url: private-link/index.yml
     # Card
-    - title: Azure Private 5G Core (Preview)
+    - title: Azure Private 5G Core
       summary: Rapidly deploy and manage private 5G networks at the enterprise edge
       imageSrc: ./media/index/private-5g-core.svg
       azureCategories: